The Buffalo Bore Premium Supercharged .358 Winchester 225gr Spitzer Boat Tail is a 20-round box of precision hunting ammunition (Buffalo Bore part no. 41A20). It uses a 225-grain Sierra SPTZ-BT bullet rated at 2,500 fps, and Buffalo Bore recorded 2,545 fps from a Ruger Hawkeye with a 22-inch barrel. The company says the bullet suits all North American big game from small whitetails to Yukon moose and bison. At expected impact velocities it mushrooms readily but holds together to penetrate large shoulder or hip bones. Buffalo Bore says it designed its .358 Winchester loads to be the most powerful and highest quality in the world.

Key Specifications

• The chambering is .358 Winchester, loaded here as a supercharged round.
• Bullet weight is 225 grains, a heavy bullet for large game.
• The bullet is a Sierra SPTZ-BT, a spitzer boat tail that mushrooms readily and holds together.
• Rated muzzle velocity is 2,500 fps, a supercharged rating.
• Buffalo Bore measured 2,545 fps from a Ruger Hawkeye with a 22-inch barrel.
• The game range runs from small whitetails to Yukon moose and bison, per Buffalo Bore.
• Buffalo Bore advises broadside shots on larger game like moose and bison.
• Each box holds 20 rounds, a full hunting supply.

Frequently Asked Questions

Which rifles can shoot this .358 Winchester load? Buffalo Bore says the ammunition is safe for use in any and all .358 Winchester rifles that are in normal operating condition.

What is the difference between Item 41A and 41B? Item 41A uses a 225-grain Sierra SPTZ-BT bullet, while Item 41B uses a 225-grain Barnes TSX bullet, which Buffalo Bore says can be used on any North American big game at any angle.

What game is this Sierra bullet suited to? Buffalo Bore says it suits all North American big game from small whitetails to Yukon moose and bison, with broadside shots recommended on larger game.

Buy the Buffalo Bore Premium Supercharged .358 Winchester 225gr Spitzer Boat Tail, 20-Round Box

Buffalo Bore’s .358 Winchester loads were built on request for shooters who want more than standard ammunition. Choose this Sierra-bullet version when you want a mushrooming bullet that holds together. Browse more rifle ammunition from our Lubbock, Texas gun shop and order for fast, insured shipping to your door.